Y.A.N.E. - Yet Another N.E.S. Emulator

Nintendo Entertainment System emulator and emulation library.

Can be used as either a standalone CLI emulator or as a ready-out-of-the-box rust crate for emulating an N.E.S.

Usage as an emulator

Make sure your cargo install directory (default ~/.cargo/bin) is in your $PATH, then simply run cargo install yane. Once installed, run yane ines path/to/my/rom.nes.

> cargo install yane
...

> yane -h
An N.E.S. emulator.

Usage: yane [COMMAND]

Commands:
  setup      Initialize the configuration files at $HOME/.yane/
  ines       Load and run an iNES (.nes) file
  savestate  Load and run a savestate (.yane.bin) file.
  help       Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

> yane ines -h
Usage: yane ines [OPTIONS] <NES_FILE>

Arguments:
  <NES_FILE>  The iNes file to run

Options:
  -s, --savedata-file <SAVEDATA_FILE>  The savedata file (.SRM). Only used if the NES game supports battery backed static ram. Will default to using the NES file name and location
      --config-file <FILE>             The configuration file for the emulator's settings [default: ~/.yane/settings.yaml]
  -d, --debug                          Start in debug mode
  -p, --paused                         Start paused, after advancing one frame in order to render one frame
  -m, --muted                          Start the emulator muted
      --keymap-file <FILE>             The .YAML file defining the key mappings for the NES [default: ~/.yane/key_map.yaml]
      --tail                           Tail the logs in terminal as well as the logging file
      --log-dir <DIRECTORY>            Directory to save logs to [default: ~/.yane/logs]
  -h, --help                           Print help

> yane setup
Successfully created configuration files

> yane ines path/to/my/rom.nes --muted --debug --keymap-file=my/custom/keymap.yaml

See KeyMap for the default key bindings.

Running yane setup will create a bunch of configuration files at $HOME/.yane. These can then be edited to change the keymappings, settings, logging directory, etc. Yane will check for these files before running every time and fall back on the defaults if they don't exist, so you can run the emulator without running yane setup if you want.

Usage as a library

// Load an iNes (.ines) file
let ines = include_bytes!("./my_game.nes");
// Create a new N.E.S. console with the game inserted
let mut nes = Nes::with_cartridge(Cartridge::from_bytes(ines, None));
let config = Config::default();
// Advance the N.E.S. by 1 frame (i.e. until the VBlank interval)
nes.advance_frame(&config);
// Reset the N.E.S.
nes.reset();

See the documentation on the library portion or the examples for more.

Feature Flags

Yane includes one feature flag, sdl, which is enabled by default. It includes the SDL interface that comes with Yane (i.e. everything in yane::app). If you want to use yane as a pure rust library, you can omit this flag.

Credits

All test roms are from the nes-test-rom repository. Some examples use models or NES games not made by me, there are credits.txt files where appropriate.